Abstract
Introduction: The relationship between anterior-lower crowding and the mandibular third molar has always been an object of study and discussion for many professionals. Being able to identify a certain correlation between this tooth and crowding would be of great help in orthodontic treatment. Objective: To study the relationship between mandibular third molars and crowding and to determine whether mandibular third molar extractions would be a valid and justified treatment option. Material and Methods: The study was observational, cross-sectional, and descriptive. Orthopantomography, lateral cephalometric radiographs and plaster models of patients who had not used orthodontic appliances prior to the study were evaluated. The variables studied were age, gender, facial pattern, dentomaxillary disharmony, and skeletal class. The programs used in this study were Nemoceph® NX 2017, Nemotec to collect data from the profile teleradiographs and the SPSS for Windows®, version 27, SPSS, USA - United States of America program to statistically analyse the results obtained. All statistical analyses took into consideration a significance p=0.05.Results: The sample was composed of 50 individuals (28 males and 22 females) between the ages of 18 and 64 years. Of all the variables studied, a very relevant significance was found between skeletal classification and dental crowding (p=0.69), with the other variables no significance of p<0.05 was obtained. Conclusion: The third molar does not have statistically significant influence (p=0.244) on crowding, which may be related to the small sample used in this study. With our study we conclude that there is no indication for extraction of mandibular third molars to avoid crowding of the anterior-inferior teeth.
| Date of Award | 25 Jul 2023 |
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| Original language | Portuguese |
| Awarding Institution |
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| Supervisor | Rita Noites (Supervisor) & Susana Paula Fernandes Machado da Silva (Co-Supervisor) |
Keywords
- Third molar
- Tooth eruption
- Malocclusion
- Tooth Crowding
Designation
- Mestrado em Medicina Dentária